| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize the map information of a navigator without making the scale of a memory part and a circuit part incorporated in a portable device to be larger by connecting the memory part to the map information transmitting part of the navigator by utilizing a connection part between the portable device and the head-free device of a vehicle. SOLUTION: The portable device 11 provided with a telephone function is coupled with the hand-free device 12 installed in the vehicle, and the electric connection between the device 12 and the navigator 13 installed in the vehicle is selectively performed through the coupling part. The map information transmitting part of the navigator 13 transmits road map data read out from a map data storage part to the device 11. The position detection part of the device 11 detects a present position based on the position detection signal, and a map information memory part fetches and stores the road map data transmitted from the navigator 13, and a picture display part performs map picture displayed and percent position picture display based on map data and position data. |
